+1 Modern SD ammo is pretty much all good. Find what your firearm likes to eat. I prefer 230gr ammo and use 230gr Remington Golden Sabers in my Sig P220 Compact and my Taurus PT-145 but have used 230gr Speer Gold Dots and 230gr Speer Gold Dots for Short Barrels with zero problems. You might also consider the cost difference of the SD ammo. If you are unfortunate enough to have to use any of this ammo, I doubt the BG is going to know the difference, or know much of anything for that matter. I figure they'll be doin' the Fosbury Flop.... It is a big bullet with big knockdown power. Any Good JHP round will do the job. Find what you like best for accuracy and function and then don't stray from it. You will become consistant with that load and will be able to place shots nearly surgically with practice.
...One point he made was that in smaller weapons he did not recommend any +P ammo as it would be too hard to control in a shoot fast type situation, and with the short barrel length you won't get the extra velocity any way. Good luck with your Glock, I've had several and currently have a G19 and they've been great guns for me.
I don't carry a .45, I carry a 9mm (we can argue about that later) BUT I would NEVER carry FMJ's if I was carrying, ESPECIALLY in a .45.. Not that I don't think the FMJ would get the job done, but more worrying about the two bystanders behind the BG.. Go with JHP's PLEASE.. You want all the energy absorbed by the bad guy and not by anyone that might be standing behind them or on the other side of the sheetrock wall backstop...I have also wondered if hollow point is really essential with a 45. Just look at the size of that bullet? how many hits with a FMJ do you think YOU can take? with that said, I still carry JHPs